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A maximum-likelihood (ML) phylogenetic tree of coat protein (cp) gene sequences of narcissus late season yellows virus (NLSYV) and narcissus yellow stripe virus (NYSV) isolates. Bootstrap values higher than 50 are shown at each node. The tree was rooted with sequences of turnip mosaic virus (TuMV), scallion mosaic virus (SCaMV) and wild onion symptomless virus (WoSV). NLSYV and NYSV isolates from this study are shown in blue and red, respectively. Scale bar is 0.1 substitutions/site
